significant vs vital

significant

adj
  • Signifying something; carrying meaning. 

  • Reasonably large in number or amount. 

  • Having a low probability of occurring by chance (for example, having high correlation and thus likely to be related). 

  • Having a covert or hidden meaning. 

  • Having a noticeable or major effect. 

noun
  • That which has significance; a sign; a token; a symbol. 

vital

adj
  • Relating to, or characteristic of life. 

  • Invigorating or life-giving. 

  • Very important. 

  • Containing life; living. 

  • Necessary to continued existence. 

  • Necessary to the continuation of life; being the seat of life; being that on which life depends. 

  • Capable of living; in a state to live; viable. 

  • Relating to the recording of life events. 

How often have the words significant and vital occurred in a corpus of books? (source: Google Ngram Viewer )